CN115889532A - Electricity core utmost point ear bending device - Google Patents

Abstract

The invention discloses a cell tab bending device, which comprises: at least two fixing mechanisms configured to fix two tabs of the battery cell; and the rotary output ends of the rotating mechanisms are connected with the fixing mechanism to drive the fixing mechanism to rotate and bend the lug. According to the battery cell tab bending device provided by the embodiment of the invention, different parts of the tab can be bent through at least two rotating mechanisms.

Description

Electricity core utmost point ear bending device

Technical Field

The invention relates to the technical field of battery cell processing, in particular to a battery cell tab bending device.

Background

In electric core course of working, need buckle the processing to the utmost point ear of electric core, generally realize the utmost point ear of bending through following two kinds of modes: 1. manually bending; 2. and (5) bending by manpower and a jig. However, both of these approaches have drawbacks: the bending is performed manually, so that the efficiency is extremely low, the quality is uncontrollable, the rejection rate is high, and the bending machine is only used for proofing; bend through artifical + tool, efficiency is lower, and the quality is general, can be used to small batch trial production, can't realize automatic production.

In the related art, the bending of the battery cell tab is realized through an automatic bending device. Patent document 1 with publication number CN214768023U discloses a bending mechanism for producing battery tabs, and the specification thereof discloses: through two cylinders that set up in the subassembly of buckling, the connecting plate and the splint that set up on the two cylinders of cooperation for two splint can stabilize the centre gripping with electric core utmost point ear under the effect of cylinder, through motor, shaft coupling, gyration piece and the butt joint piece that sets up, make the subassembly of buckling rotate under the effect of motor, and then buckle to the electric core utmost point ear of centre gripping.

Patent document 2 with publication No. CN211071378U discloses a tab bending device, and the specification thereof discloses: the locating piece reciprocates to make the locating piece contact the surface of utmost point ear, carry out the location of the position of bending, the locating piece removes behind the predetermined position, bends the elbow and oppresses utmost point ear and revolve around the locating piece rotation between two support arms, and utmost point ear rotates along with the first common around the locating piece of bending, accomplishes the process of bending of utmost point ear.

In the solutions disclosed in patent documents 1 and 2, the single rotating mechanism used for bending the tab cannot be rotated to bend different portions of the tab.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a battery cell tab bending device, which aims to realize the purpose of bending different parts of a tab through at least two rotating mechanisms.

According to the embodiment of the invention, the battery core tab bending device comprises: at least two fixing mechanisms configured to fix two tabs of the battery cell; and the rotary output ends of the rotating mechanisms are connected with the fixing mechanism to drive the fixing mechanism to rotate and bend the lug.

According to the cell tab bending device provided by the embodiment of the invention, at least the following beneficial effects can be achieved: the fixing mechanism is used for fixing two tabs of the battery cell respectively, and the two rotating mechanisms rotate respectively to enable the fixing mechanism to rotate, so that the two tabs can be bent respectively, and automatic production of the bent tabs is realized.

According to some embodiments of the invention, a joint and a bending center line at the joint are arranged between the two tabs; the rotating mechanism is configured to be a servo motor and a rotating arm which are arranged corresponding to the fixing mechanism, one end of the rotating arm is connected with the servo motor, the other end of the rotating arm is connected with the fixing mechanism, the rotating mechanism is configured in a manner that the servo motor drives the rotating arm to rotate so as to drive the fixing mechanism to rotate, and the rotating center line of the rotating arm is parallel to the bending center line.

According to some embodiments of the invention, the servo motor is configured to drive the fixing mechanism to rotate stepwise.

According to some embodiments of the present invention, the battery cell tab bending apparatus further includes a pressing mechanism, the pressing mechanism includes a pressing block for pressing the tab on the bending center line, and a distance between the rotation center line of the rotating arm and the bending center line in a width extending direction of the pressing block is selected from a range of 0.08mm to 0.12mm.

According to some embodiments of the present invention, the device includes two rotating mechanisms and two fixing mechanisms, wherein the two rotating mechanisms are disposed in the same side direction of the fixing mechanisms and located on two opposite sides of the bending center line.

According to some embodiments of the present invention, the fixing mechanism is configured as an adsorption mechanism, the adsorption mechanism includes a suction plate and a suction cup, the suction plate forms an adsorption surface against which the tab abuts, and the suction cup is disposed on the adsorption surface and is communicated with a vacuum device to adsorb the tab.

According to some embodiments of the invention, the suction mechanism further comprises a first connection plate connected to the rotation mechanism, one end of the first connection plate being connected to the suction plate and the other end being connected to the rotation mechanism.

According to some embodiments of the invention, a joint and a bending center line at the joint are arranged between the two tabs; the cell tab bending device further comprises a pressing mechanism, and the pressing mechanism comprises a pressing block and a driving functional assembly, wherein the pressing block is used for pressing the bending central line to the connecting part, and the driving functional assembly drives the pressing block to move.

According to some embodiments of the invention, the two pressing blocks are arranged at intervals along the bending center line and can press against two ends of the joint along the bending center line.

According to some embodiments of the invention, the driving function assembly comprises a first air cylinder, the press block is connected to the first air cylinder through a connecting column, and the first air cylinder is used for enabling the press block to move along a direction parallel to the bending center line.

According to some embodiments of the invention, the driving function assembly comprises a first air cylinder, the press block is connected to the first air cylinder through a connecting column, and the first air cylinder is used for enabling the press block to move along a direction parallel to the bending center line; the driving function assembly further comprises a second air cylinder, the second air cylinder is connected with the first air cylinder, and the second air cylinder is used for driving the first air cylinder and the pressing block to move in the direction perpendicular to the bending center line.

According to some embodiments of the present invention, the second cylinder is connected to the first cylinder through a stroke adjusting assembly, the stroke adjusting assembly includes a cam plate in driving connection with the second cylinder, a cam in driving connection with the cam plate, and a second connecting plate in fixed connection with the cam, and one end of the second connecting plate, which is far away from the cam, is fixedly connected to the first cylinder; the second cylinder is used for driving the cam plate to slide, the cam plate is provided with a long hole inclined relative to the sliding direction of the cam plate, and the cam is inserted into the long hole in a sliding mode.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is also possible for those skilled in the art to obtain other drawings based on the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a cell tab bending device according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is a schematic structural diagram of a driving function assembly and a stroke adjustment assembly of the battery cell tab bending device according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of another view angle of the battery cell tab bending device according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a tab of a battery cell;

fig. 7 is a schematic structural diagram of a tab of a battery cell after being bent by a certain angle;

fig. 8 is a schematic structural diagram of another view angle of the battery cell tab bending apparatus according to the embodiment of the present invention;

fig. 9 is an enlarged view at C in fig. 8;

fig. 10 is a schematic structural diagram of another view angle of the battery cell tab bending apparatus according to the embodiment of the present invention;

fig. 11 is a schematic diagram of a positional relationship between a pressing block and a rotating arm of the battery cell tab bending apparatus according to the embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The invention discloses a battery core lug bending device which is used for realizing automatic production of bent battery core lugs.

A cell tab bending apparatus 10 according to an embodiment of the present invention is described below with reference to fig. 1 to 10.

Referring to fig. 1 to 5, a cell tab bending apparatus 10 according to an embodiment of the present invention includes: at least two fixing mechanisms configured to fix two tabs 200 of the battery cell; and at least two rotating mechanisms 120, wherein the rotating output ends of the rotating mechanisms 120 are configured to be connected with the fixing mechanism so as to drive the fixing mechanism to rotate and bend the tab.

According to the cell tab bending device 10 of the embodiment of the invention, at least the following beneficial effects can be achieved:

1. the fixing mechanism is used for respectively fixing the two tabs 200 of the battery cell, and the fixing mechanism can be rotated by respectively rotating the two rotating mechanisms 120, so that the two tabs 200 can be respectively bent, and the automatic production of the bent tabs 200 is realized;

2. the rotating mechanism 120 rotates the fixing mechanism through the rotating output end to realize bending of the tab 200 fixed on the rotating output end, and compared with the mode that the tab 200 is pressed by the rotating member rotating greatly, the embodiment of the invention has the beneficial effect that the required bending space is small;

3. since at least two rotating mechanisms 120 may be individually operated, one of the rotating mechanisms 120 may be selectively operated, or the rotating amplitudes of at least two rotating mechanisms 120 may be different;

4. when one of the rotating mechanisms 120 is out of operation, the other rotating mechanism 120 can accomplish the purpose of bending the tab 200.

It should be noted that, in the embodiment of the present invention, two fixing mechanisms are preferably provided, and the positions of the two fixing mechanisms correspond to the positions of the two tabs 200 of the battery cell, respectively. The two rotating mechanisms 120 are disposed at positions such that their rotating outputs can respectively drive the two fixing mechanisms to rotate, and specifically, are disposed adjacent to the two fixing mechanisms as a preferred embodiment. When the two tabs 200 of the battery cell are respectively fixed on the two fixing mechanisms, the bending center lines of the two tabs 200 are located between the two fixing mechanisms.

According to some embodiments of the present invention, referring to fig. 1, 2, 4 and 5, a connection point and a bending center line at the connection point are formed between two tabs 200; the rotation mechanism 120 is configured as a servo motor 121 and a rotation arm 122 provided corresponding to the fixing mechanism, one end of the rotation arm 122 is connected to the servo motor 121, and the other end is connected to the fixing mechanism, and the rotation mechanism 120 is configured such that the servo motor 121 drives the rotation arm 122 to rotate and drives the fixing mechanism to rotate, and a rotation center line of the rotation arm 122 is parallel to a bending center line.

Thus, the rotation mechanism 120 can drive the fixing mechanism to rotate, and the tab 200 on the fixing mechanism can be bent.

Specifically, in the present embodiment, the servo motor 121 may implement precise torque control, so that the bending degree of the tab 200 may be precisely controlled, and the processing precision may be ensured. As shown in fig. 1, 2 and 5, the servo motors 121, the rotating arms 122 and the fixing mechanisms are located at the same installation height, and exemplarily, one of the servo motors 121 may rotate at a certain angle in one direction, and output a rotating power to the corresponding fixing mechanism through the rotating arm 122, so that the fixing mechanism rotates upward, that is, the fixing mechanism bends upward. The rotation center line of the rotation arm 122 is parallel to the bending center line of the tab 200, so that the tab 200 can be bent at a desired position (i.e., at the bending center line) when the fixing mechanism is driven to rotate by the rotation arm 122.

Further, in the embodiment shown in fig. 1 and 5, two servo motors 121 are fixed in parallel to a mounting frame body of the cell tab bending apparatus 10, output shafts of the servo motors face a side where the fixing mechanism is located, and rotating arms 122 are connected to output shafts of the servo motors, respectively, and the rotating arms 122 are configured as two parallel arms. Alternatively, one ends of the two rotating arms 122 close to the servo motors 121 are respectively connected with the output shafts of the two servo motors 121 through separate belt assemblies 124. It should be noted that one end of the servo motor 121 is preferably driven by a belt drive or a chain drive.

Further, the two rotating arms 122 include a first and a second.

Referring to fig. 8 and 9, the first arm includes a first arm 122a, a second arm 122b and a third arm 122c, the first arm 122a includes a first end and a second end which are far away from each other, the first end of the first arm 122a is rotatably connected to a bracket provided on the mounting frame through a bearing, the second end is fixedly connected to the second arm 122b, the second arm 122b forms an angle of 90 degrees or close to 90 degrees with the first arm 122a, the first end of the first arm 122a and the connected bearing serve as a rotation center, the second end serves as a rotation free end, and the second arm 122b moves together with the second end of the first arm 122 a. The second arm 122b extends from the connection with the second end of the first arm 122a toward the one side of the fixing mechanism.

Referring to fig. 8 and 9, the third arm 122c includes a first end connected to an end of the second arm 122b far from the first arm 122a, a second end far from the second arm 122b and connected to the fixing mechanism, and a third end extending toward the rotation center line of the rotation arm 122, the third end of the second arm 122b is rotatably connected to a bracket (different from the bracket to which the first arm 122a is connected) provided on the mounting bracket body through a bearing, the third end of the third arm 122c and the connected bearing serve as a rotation center (located on the same straight line with the rotation center line of the first arm 122 a), and the first end and the second end can serve as free ends of rotation. The first arm 122a, the second arm 122b, and the third arm 122c form a zigzag shape, that is, an avoidance space is formed in a middle portion of a first one of the two rotating arms 122, and the avoidance space can be used to avoid a second one of the two rotating arms 122. It is preferable that the rotation center lines of the first arm 122a and the third arm 122c and the bending center line of the tab are located on the same straight line.

Referring to fig. 8 and 9, a second one of the two rotation arms 122 includes a fourth arm 122d and a fifth arm 122e, the fourth arm 122d is located in the above-mentioned space, the fourth arm 122d is rotatably connected to the bracket provided on the mounting frame body through a bearing along the opposite ends of the bending center line of the tab, the fifth arm 122e is connected to the outside of the bending center line of the tab of the fourth arm 122d, and the fifth arm 122e extends toward the fixing mechanism to be fixedly connected thereto, it should be noted that the fourth arm 122d and the connected bearing are used as the rotation center, and the fifth arm 122e is used as the free end of rotation to transmit power to the fixing mechanism to bend the tab. It is preferable that the rotation center lines of the first arm 122a and the third arm 122c, and the rotation center line of the fourth arm 122d and the bending center line of the tab are located on the same straight line.

Alternatively, in the embodiment shown in fig. 11, the distance between the rotation center line of the rotating arm 122 (including the rotation center lines of the first arm 122a and the third arm 122c, and the rotation center line of the fourth arm 122 d) and the bending center line of the tab (located at the edge in the width direction of the pressing piece 131) in the extending direction of the pressing piece is d, and the value of d is selected from a range of 0.08mm to 0.12mm, that is, d may be any value of 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, or 0.08mm to 0.12mm. Where r denotes the center of rotation of the rotating arm.

It should be noted that, since the rotation axes (i.e. rotation center lines) of the two rotation arms 122 must be located on the same line or close to the bending center line of the tab, the output shafts of the two servo motors must be very close to each other, and the fixing mechanism needs to extend a sufficient area to support and fix most of the area of the tab, the rotation center lines of the two rotation arms 122 can coincide with the bending center line of the tab by the above structure of the two rotation arms 122, and the two rotation arms 122 can extend towards the outer side far from the bending center line to apply a sufficient force to most of the fixing mechanism to bend the tab.

Furthermore, the battery tab bending apparatus 10 has a mounting frame body on which a travel switch 123 is disposed, the travel switch 123 being respectively adapted to the two rotating arms 122, and the travel switch 123 controls the position and the rotating manner of the rotating arms 122, including controlling the position at which the rotation stops, and the direction and angle during the rotation. The two travel switches 123 are respectively disposed corresponding to one ends of the two rotating arms 122 close to the servo motor 121, and contacts of the two travel switches 123 extend toward the rotating arms 122 to be able to sense the rotating arms 122. Illustratively, one of the travel switches 123 is disposed corresponding to a junction between the first arm 122a and the second arm 122b, and the other of the travel switches 123 is disposed corresponding to a junction between the fourth arm 122d and the fifth arm 122 e.

In the present embodiment, the servo motor preferably drives the rotation arm 122 to rotate through a belt drive or a chain drive.

It can be understood that, in the process of bending the tab, there is a possibility of causing jamming for some reason, and at this time, the rotating arm 122 is fixed, and if the servo motor uses a gear transmission, the fixing of the rotating arm 122 will also fix the gear and the output shaft of the servo motor, while the servo motor is still continuously connected with current. When the current is very high, the device is easy to damage, thereby causing accidents, short service life of the device and frequent maintenance. In the embodiment of the invention, when the servo motor is driven by the belt, a certain bending force (determined by friction of the belt and the belt wheel) can be applied to the pole lug at certain limit positions, and the driving belt and the output shaft of the servo motor are allowed to slip at the same time, so that the output shaft of the servo motor is prevented from being fixed to damage the servo motor.

Additionally, if a stepping motor or a code wheel is used to drive the rotary arm instead of a servo motor, the rotation angle of the rotary arm may be inaccurate due to the slipping of the transmission belt, so that the position switch 123 is disposed at a position close to the rotary arm to accurately monitor and calculate the position of the rotary arm 122, thereby reducing the rotation angle error of the rotary arm caused by the slipping of the transmission belt, and thus improving the accuracy of bending the tab.

According to some embodiments of the present invention, the servo motor 121 is configured to drive the fixing mechanism to rotate stepwise.

Thus, other processing steps can be conveniently performed in the bending process of the tab 200.

Illustratively, when two tabs 200 are bent, the pressing block 131 abuts against a bending center line at the joint, when the tabs 200 are bent to a certain degree, the rotation of the fixing mechanism is suspended, and after the pressing block 131 moves away, the fixing mechanism is driven to continue rotating, so that the tabs 200 are bent in place.

According to some embodiments of the present invention, the cell tab bending apparatus includes two rotating mechanisms 120 and two fixing mechanisms, where the two rotating mechanisms 120 are disposed in the same side direction of the fixing mechanism and located on two opposite sides of the bending center line, respectively.

Thus, the space occupied by the rotating space can be reduced.

As shown in fig. 1 and 5, it can be understood that the two rotating mechanisms 120 are juxtaposed in the same lateral direction of the fixing mechanism. Compared with the two rotating mechanisms which are separately arranged on different sides of the fixing mechanism, the two rotating mechanisms 120 which are arranged in parallel can reduce the occupied space, thereby reducing the volume of the equipment; additionally, since the two are close to each other, the wiring of the wire can be facilitated.

According to some embodiments of the present invention, referring to fig. 2, the fixing mechanism is configured as an adsorption mechanism 111, the adsorption mechanism 111 includes a suction plate 112 and a suction cup 113, the suction plate 112 forms an adsorption surface against which the tab 200 abuts, and the suction cup 113 is disposed on the adsorption surface and communicates with a vacuum device to adsorb the tab 200.

Thus, the fixing device can fix the tab 200, and the tab 200 can be bent.

Specifically, when the tab 200 is attached to the absorption surface of the absorption plate 112, the vacuum device operates to tightly absorb the tab 200 to the absorption plate 112, and similarly, after the tab 200 is bent in place or under other conditions that the absorption plate 112 needs to be detached, the vacuum device may stop operating. As can be understood, the tab 200 is fixed by means of adsorption, and the damage to the tab 200 is extremely small; additionally, the suction plate 112 secures the tab 200 on a single side of the tab 200, which may facilitate folding of the two tabs 200 in half. However, the present design is not limited thereto, and in other embodiments, other devices may be used instead of the adsorption mechanism 111, for example, clamping the tab 200 by a clamping member.

According to some embodiments of the present invention, referring to fig. 2, the suction mechanism 111 further includes a first connection plate 114 connected to the rotation mechanism 120, and one end of the first connection plate 114 is connected to the suction plate 112 and the other end is connected to the rotation mechanism 120.

In this way, the connection between the suction mechanism 111 and the rotation mechanism 120 can be realized, and when the rotation mechanism 120 includes the rotation arm 122, one end of the first connection plate 114 is connected to the rotation arm 122. In other embodiments, the suction plate 112 of the suction mechanism 111 may be directly connected to the rotation mechanism 120.

According to some embodiments of the present invention, referring to fig. 2, 6 and 7, a connection part and a bending center line at the connection part are formed between two tabs 200; the cell tab bending device 10 further includes a pressing mechanism, and the pressing mechanism includes a pressing block 131 for abutting against the connection position at the bending center line, and a driving functional assembly 132 for driving the pressing block 131 to move.

In this way, it is possible to realize that the two tabs 200 are bent accurately at desired positions.

Specifically, when the two tabs 200 are bent, in order to bend the two tabs at a desired position (i.e., at the bending center line), the driving function component 132 may drive the pressing piece 131 to move, press against the bending center line between the two tabs and apply a sufficient force, so that the two tabs are bent at the bending center line. After the tab 200 is bent to a certain degree, the fixing mechanism stops rotating, and after the pressing block 131 moves away, the fixing mechanism is driven to rotate continuously, so that the tab 200 is bent in place. Illustratively, as shown in fig. 3 and 4, the driving function assembly 132 includes a cylinder serving as a power source, and a connection structure for driving the cylinder to connect, wherein a pressing block 131 is disposed at an end of the connection structure close to the cell tab 200, and when the power source is in operation, the connection structure and the pressing block 131 move together, wherein the movement of the pressing block 131 can be close to and away from the tab 200 in all directions.

According to some embodiments of the present invention, referring to fig. 2 and 4, the pressing pieces 131 are provided in two, and the two pressing pieces 131 are spaced along the bending center line and can press against two ends of the connection along the bending center line.

Therefore, the two ends of the joint of the two tabs 200 along the bending center line can be balanced in stress. It should be noted that, when the pressing block 131 has a certain width, after the pressing block 131 abuts against the joint of the tab 200, the tab 200 is bent at the edge of the pressing block 131 in the width direction, and at this time, the tab 200 has two bending shafts (located at the edge of the pressing block 131 in the width direction), in this case, the rotation center lines of the two rotating arms 122 driving the fixing mechanism to rotate may be located on the same straight line with the two bending shafts, respectively, so as to bend the tab 200.

It can be understood that the two pressing blocks 131 are respectively disposed at two sides of the fixing mechanism, and the two pressing blocks can move to press two ends of the joint of the two tabs 200 along the preset bending center line, so that the two ends of the joint can be pressed when the two tabs 200 are bent. However, the design is not limited thereto, and in other embodiments, the pressing piece 131 may be provided as a single pressing piece, based on the length of the pressing piece 131 being enough to press the connection of the two tabs 200 at the bending center line position. Specifically, when the pressing pieces 131 are provided as a single piece, one end of the pressing piece 131 is fixedly connected to the upper end of the connection post connected to the first cylinder 133, and extends above the position of the bent tab 200 by a sufficient length to be able to press the tab 200 so that the tab 200 is conveniently bent.

Optionally, a fixing groove is disposed at a joint of the connecting column and the pressing block 131, one end of the pressing block 131 is embedded and fixed in the fixing groove, and a wall surface of the fixing groove can limit a wall surface of the pressing block 131 so that the pressing block is not easily deformed at the joint when abutting against the tab.

According to some embodiments of the present invention, as shown in fig. 2, 3 and 4, the driving function assembly 132 includes a first cylinder 133, the pressing block 131 is connected to the first cylinder 133 through a connecting column, and the first cylinder 133 is used for moving the pressing block 131 in a direction parallel to the bending center line. In this way, the pressing block 131 can be driven to approach and separate from the fixing mechanism and the tab 200.

Specifically, the lower ends of the two connecting columns are respectively connected with the first cylinder 133, the upper ends of the two connecting columns are respectively connected with one end of the pressing block 131 in the horizontal direction, and in addition, one end of the pressing block 131 departing from the connecting columns can be used for abutting against the tab 200. Optionally, the first cylinder 133 extends in a horizontal direction. The bending central line of the joint of the two tabs 200 can be regarded as extending along the horizontal direction, that is, the moving direction of the first air cylinder 133 driving the pressing block 131 can be understood as the horizontal direction, and the first air cylinder 133 can work to enable the pressing block 131 to approach and depart from the fixing mechanism and the tabs 200 in the horizontal direction. Alternatively, after the first cylinder 133 drives the pressing block 131 to move to the proper position, the pressing block 131 may press the connection point of the tab 200 by adjusting the distance between the pressing block 131 and the fixing mechanism in the up-down direction, for example, by moving the pressing block 131 or the fixing mechanism up and down.

According to some embodiments of the present invention, as shown in fig. 1 to 4, the driving function assembly 132 includes a first cylinder 133, the pressing block 131 is connected to the first cylinder 133 through a connecting column, and the first cylinder 133 is used for moving the pressing block 131 in a direction parallel to the bending center line; the driving function assembly 132 further comprises a second air cylinder 134, the second air cylinder 134 is connected with the first air cylinder 133, and the second air cylinder 134 is used for driving the first air cylinder 133 and the pressing block 131 to move along the direction perpendicular to the bending center line.

In this way, the pressing block 131 can move and press against the joint of the two tabs 200.

Specifically, in the embodiment shown in fig. 1 to 4, the bending center line of the joint of the two tabs 200 can be regarded as extending in the horizontal direction, the moving direction of the first cylinder 133 driving the pressing piece 131 can be understood as the horizontal direction, and the first cylinder 133 can work to make the pressing piece 131 approach and separate from the fixing mechanism and the tabs 200 in the horizontal direction; the moving direction of the second cylinder 134 driving the first cylinder 133 and the pressing block 131 can be regarded as the up-down direction, that is, the second cylinder 134 can make the pressing block 131 get close to and get away from the fixing mechanism and the tab 200 in the up-down direction. It can be understood that the first cylinder 133 and the second cylinder 134 cooperate to realize the movement of the pressing block 131 in the horizontal direction and the vertical direction. Illustratively, the first cylinder 133 is operated to move the press block 131 to above the target position in a direction parallel to the bending center line (which may be understood as a horizontal direction shown in fig. 1 and 4), and then the second cylinder 134 may move the first cylinder 133 and the press block 131 to the target position in a direction perpendicular to the bending center line (which may be understood as an up-down direction shown in fig. 1 and 4).

According to some embodiments of the present invention, referring to fig. 3 and 4, the second cylinder 134 is connected to the first cylinder 133 through a stroke adjustment assembly 135, the stroke adjustment assembly 135 includes a cam plate 136 to which the second cylinder 134 is drivingly connected, a cam 137 to which the cam plate 136 is drivingly connected, and a second connecting plate 138 to which the cam 137 is fixedly connected, and an end of the second connecting plate 138 away from the cam 137 is fixedly connected to the first cylinder 133; the second cylinder 134 is used for driving the cam plate 136 to slide, the cam plate 136 is provided with a long hole inclined relative to the sliding direction of the cam plate 136, and the cam 137 is slidably inserted into the long hole. As shown in fig. 10, the cam plate 136 is mounted on the frame body by a guide rail 139, and the cam plate 136 moves up and down along the guide rail 139 so that the first cylinder 133 and the like can move up and down.

In this way, the first cylinder 133 and the pressure block 131 can be gradually moved.

It can be understood that the stroke adjusting assembly 135 can be used to avoid the first cylinder 133 and the pressing block 131 from moving abruptly in a direction perpendicular to the bending center line (which can be understood as the up-down direction shown in fig. 1 and 4), so that the pressing block 131 can be prevented from moving improperly and applying excessive pressure to the electric core, and additionally, the position adjustment of the pressing block 131 can be more accurate through the stroke adjusting assembly 135. Illustratively, in the embodiment shown in fig. 3 and 4, the elongated holes in the cam plate 136 are disposed in an inclined manner with respect to the horizontal direction, that is, upper and lower hole wall surfaces of the elongated holes are disposed in an inclined manner with respect to the horizontal direction; the second cylinder 134 may drive the cam plate 136 to move in the horizontal direction, and during the movement of the cam plate 136, the upper and lower wall surfaces of the elongated hole may press against the outer wall surface of the cam 137, so that the cam 137 has a movement in the up-down direction, that is, the second connecting plate 138 connected to the cam 137, the first cylinder 133 connected to the second connecting plate 138, and the pressing block 131 connected to the first cylinder 133 may move in the up-down direction. The direction in which the second cylinder 134 drives the cam plate 136 to move may be other directions, so that the cam 137 or the like can have a movement in the vertical direction. It should be noted that the vertical direction and the horizontal direction in the embodiments of the present invention are used to facilitate understanding, and are not intended to specifically limit the positional relationship, the connection relationship, and the like of the respective components.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. The utility model provides an electricity core utmost point ear bending device which characterized in that includes:

at least two fixing mechanisms configured to fix two tabs of the battery cell;

and the rotary output ends of the rotating mechanisms are connected with the fixing mechanism to drive the fixing mechanism to rotate and bend the lug.

2. The battery core tab bending device according to claim 1, wherein a joint and a bending center line located at the joint are formed between the two tabs;

the rotating mechanism is configured to be a servo motor and a rotating arm which are arranged corresponding to the fixing mechanism, one end of the rotating arm is connected with the servo motor, the other end of the rotating arm is connected with the fixing mechanism, the rotating mechanism is configured in a manner that the servo motor drives the rotating arm to rotate so as to drive the fixing mechanism to rotate, and the rotating center line of the rotating arm is parallel to the bending center line.

3. The cell tab bending device according to claim 2, wherein the servo motor is configured to drive the fixing mechanism to rotate step by step; and/or

The battery cell tab bending device further comprises a pressing mechanism, the pressing mechanism comprises a pressing block used for pressing the bending central line against the tab, and the distance between the rotating central line of the rotating arm and the bending central line in the width extending direction of the pressing block is selected from the range of 0.08mm to 0.12mm.

4. The battery tab bending device according to claim 2, wherein the device comprises two rotating mechanisms and two fixing mechanisms, wherein the rotating mechanisms are arranged in the same side direction of the fixing mechanisms and are respectively located on two opposite sides of the bending center line.

5. The battery cell tab bending device according to claim 1, wherein the fixing mechanism is configured as an adsorption mechanism, the adsorption mechanism includes a suction plate and a suction cup, the suction plate is formed with an adsorption surface against which the tab abuts, and the suction cup is disposed on the adsorption surface and is connected to a vacuum device to adsorb the tab.

6. The battery tab bending device according to claim 5, wherein the adsorption mechanism further comprises a first connection plate connected to the rotation mechanism, one end of the first connection plate is connected to the adsorption plate, and the other end of the first connection plate is connected to the rotation mechanism.

7. The cell tab bending device according to any one of claims 1 to 6, wherein a joint and a bending center line at the joint are formed between the two tabs;

the cell tab bending device further comprises a pressing mechanism, and the pressing mechanism comprises a pressing block and a driving functional assembly, wherein the pressing block is used for pressing the bending central line to the connecting part, and the driving functional assembly drives the pressing block to move.

8. The battery core tab bending device according to claim 7, wherein the number of the pressing blocks is two, and the two pressing blocks are distributed at intervals along the bending center line and can press two ends of the connecting portion along the bending center line.

9. The battery tab bending device according to claim 7, wherein the driving function assembly comprises a first cylinder, the pressing block is connected to the first cylinder through a connecting column, and the first cylinder is used for moving the pressing block in a direction parallel to the bending center line.

10. The cell tab bending device according to claim 7, wherein the driving function assembly comprises a first cylinder, the pressing block is connected to the first cylinder through a connecting column, and the first cylinder is used for moving the pressing block in a direction parallel to the bending center line;

the driving function assembly further comprises a second air cylinder, the second air cylinder is connected with the first air cylinder, and the second air cylinder is used for driving the first air cylinder and the pressing block to move in the direction perpendicular to the bending center line.

11. The battery core tab bending device according to claim 10, wherein the second cylinder is connected to the first cylinder through a stroke adjustment assembly, the stroke adjustment assembly includes a cam plate in driving connection with the second cylinder, a cam in driving connection with the cam plate, and a second connection plate fixedly connected to the cam, and one end of the second connection plate, which is far away from the cam, is fixedly connected to the first cylinder; wherein, the first and the second end of the pipe are connected with each other,

the second cylinder is used for driving the cam plate to slide, the cam plate is provided with a long hole inclined relative to the sliding direction of the cam plate, and the cam is inserted into the long hole in a sliding mode.

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